单选题 An elderly client with Alzheimer's disease begins supplemental tube feedings through a gastrostomy tube to provide adequate calorie intake. The nurse should be concerned most with the potential for （）.

A、 hypoglycemia.
B、 fluid volume excess.
C、 aspiration.
D、 constipation.

【正确答案】 C

【答案解析】Of the choices listed, aspiration is the most serious potential complication of tube feedings. Dehydration--not fluid volume excess--is a concern because of decreased free water intake. Hyperglycemia, not hypoglycemia, is a complication secondary to carbohydrate load of enterat feeding solutions. Constipation is a problem, but it usually isn't a serious one. The client would most likely experience diarrhea.